Scissors or shears.



J. P. JACKSON.

SCISSOBS 0R SHEARS.

(Application filed Nov. 22, 1901.)

(No Model.)

:Rs co. imuvouma. WASNINGTGM u. c,

Patented Oct. 2|, I902.

UNITED STATES 1 PATENT OFFICE.

JOSEPH P. JACKSON, OF SOUTHINGTCN, CONNECTICUT.

SCISSORS OR SHEARS.

SPECIFICATION forming part of Letters Patent No. 711,503, dated October21, 1902.

Application filed November 22, 1901. Serial No. 83,219. (No model.)

To atZZ whom it may concern.-

Be it known that I, JOSEPH P. JACKSON, of Southington, in the county ofHartford and State of Connecticut, have invented a new and usefulImprovement in Scissors and Shears; and I do hereby declare thefollowing, when taken in connection with the accompanying drawings andthe letters of reference marked thereon, to be a full, clear, and exactdescription of the same, and which said drawings constitute part of thisspecification, and represent, in-

Figure 1, a side view of a pair of shears constructed in accordance withmy invention; Fig. 2, an edge view of the same; Fig. 3; a verticalcentral section through the central portion of the members and lockingdevice; Fig. 4, a face or plan View of the central portion of one of theblades having an angular rivet-opening; Fig. 5, a similar view of theother blade having a round opening; Fig. 6, a perspective view of therivet detached; Fig. 7, a plan view of .the key.

This invention relates to an improvement in scissors and shears, andparticularly to that class in which a key is employed to hold the rivetin position and avoid the screwrivet which is more generally employed,the object being a simple arrangement whereby the key will be positivelyheld in position and also a construction in which a portion of the rivetis angular for engagement with an angular opening in one of the blades;and the invention consists in the construction as hereinafter described,and particularly recited in the claim.

The members A B' of the scissors or shears are of the usual form and maybe slightly bowed longitudinally,as shown in Fig. 2. One memberA isprovided with an angular rivethole C, and the other member B is providedwith a round rivet-hole D. The hole in the member B may be enlarged atits outer end to form arecess for the head E of the rivet F in the'usualmanner. With the members thus formed the rivet F is adapted to passthrough the two members and project beyond the outer face of the memberA. This rivet comprises a round portion H, corresponding to the hole Din the member B, an angular portion I corresponding to the angular holeC in the member A, and a triangular end J. beneath which is an angulargroove K. This rivet is passed through the two members and so that theend J projects beyond the face of the member A, and to hold the rivet inposition I employ a locking-key L, having the triangular opening M,corresponding to the triangular end J of the rivet over which the keymay pass, the apex of the triangle in the key being reversed in positionto the apex of the triangle on the rivet and so that'the key must beturned out of line with its locked position in order to be passed overthe rivet. When the key is passed over the end of the rivet, it isturned in the groove K, so as to reverse the position of the angles,whereby the key becomes interlocked with the rivet, as clearly shown inFig. 1.

To hold the key in its locked position, I

preferably provide itwith a small stud or same in position and unitingthe two memhers. I am also aware that rivets for scissors and shearshave been made with an angular portion'and a round portion, andtherefore do not wish to be understood as claiming, broadly, such as myinvention.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The herein-described scissors and shears comprising two blades, onehaving a round rivet-hole and the other an angular rivet-hole,

a rivet adapted to be passed through the rivetholes in the blades, saidrivet having an angular portion and a round portion corresponding to theholes in the blades, one end of the rivet projecting beyond the face ofone of the blades and made triangular, an annular groove below saidtriangular end and a key having a triangular opening corresponding tothe triangular projecting end of the rivet over which it is adapted toset, the apex of the triangle in the key being reversed in position tothe apex of the triangle of the rivet when the key is in its lockedposition, whereby the key must be turned out of line with the lockedposition before it can be set over the rivet, said key formed with afinger-piece at its inner end and also provided with a small stud 0r pinprojecting from its inner face and adapt- 10 ed to enter a notch formedin the outer face of the member adjacent thereto, substantially asdescribed.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

JOSEPH P. JACKSON.

Witnesses:

EDWIN G. LEWIS, RoY P. NEWELL.

